<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title>元素的显示</title>
		<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no">
		<link type="text/css" href="bootstrap-3.3.7-dist/css/bootstrap.min.css" rel="stylesheet" />
		<style>
			div {
				border: 1px solid #0000FF;
				height: 100px;
			}
		</style>
	</head>
	<body>
		<h1>显示 </h1>		<div class="visible-xs-block">我只在手机上显示</div>
		
		<div class="visible-md-block visible-lg-block">我在电脑上显示</div>
		
		<script src="jquery-3.5.1.min.js"></script>
		<script src="bootstrap-3.3.7-dist/js/bootstrap.min.js"></script>
	</body>
</html>
